Omron RX2 Series User Manual page 790

12 Troubleshooting
Occurrence
A shutoff function
is at work.
12 - 36
Estimated cause(s)
The main power supply is not
turned ON.
[RS] terminal is ON.
[FRS] terminal is ON.
[CS] terminal is ON.
The [ROK] terminal has been
assigned and is turned OFF.
STO terminal is not wired or is in
OFF state.
The inverter is tripping.
Shutoff functions are not on.
Exemplar measures to be taken
When the power supply is separated to R, S, T and R0,
T0 (J51 connector section), the inverter can not be
operated if the R, S, T, side power is down. The power
supply check is required.
If the [RS] terminal is ON, the inverter enters the reset
mode and does not accept operation commands. The
[RS] terminal needs to be turned OFF.
If the [FRS] terminal is ON, the inverter enters the
free-run stop mode and does not accept operation
commands. The [FRS] terminal needs to be turned
OFF.
If the [CS] terminal is ON, the inverter enters the mode
switched to commercial power supply shutoff and does
not accept operation commands. Check the commer-
cial switching function.
When the [ROK] terminal is used, if the terminal func-
tion is OFF, the inverter does not accept operation
commands. Check the operation permission signal.
If you do not use the function of STO terminal, you
need to attach a short-circuit wire to it.
When the inverter is tripping, it does not accept opera-
tion commands. Identify the factors for trip.
If shutoff functions are not on and the motor is not
driven, there is another factor.  Return to The motor
doesn't rotate although an operation command was
entered.
High-function General-purpose Inverter RX2 Series User's Manual